public class Test7 {
    //买卖股票的最佳时机含手续费
    public int maxProfit(int[] prices, int fee) {
        //还是通过状态机得到买入、可交易两种状态的转换过程
        int n = prices.length;
        int[][] dp = new int[n][2];
        dp[0][0] = -prices[0];
        for (int i = 1; i < n; i++) {
            dp[i][0] = Math.max(dp[i-1][0],dp[i-1][1] - prices[i]);
            dp[i][1] = Math.max(dp[i-1][1],dp[i-1][0] + prices[i] - fee);
        }
        return Math.max(dp[n-1][0],dp[n-1][1]);
    }
}
